import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;

/**
 * Creater with IntelliJ IDEA.
 * Description:
 * User: 86152
 * Dae: 2022-07-31
 * Time: 20:42
 */
public class demo2 {
    public static void main(String[] args) throws ExecutionException, InterruptedException {
        Callable<Integer> callable = new Callable<Integer>() {
            @Override
            public Integer call() throws Exception {
                Integer sum = new Integer(0);
                for(int i=1;i<=1000;i++) {
                    sum+=i;
                }
                return sum;
            }
        };
        FutureTask<Integer> task = new FutureTask<>(callable);
        Thread t = new Thread(task);
        t.start();
        int result = task.get();
        System.out.println(result);
    }
}
